CBAK Energy previews high-rate LFP cells for AI data centre backup
CBAK Energy Technology (NASDAQ: CBAT) has previewed two next-generation lithium iron phosphate cylindrical cells designed for battery backup unit (BBU) and uninterruptible power supply (UPS) applications in AI data centres. The 26650 HP V2.0 and 26650 PFS2 V2.0 are positioned by the company as a response to growing rack-level power density and the millisecond-scale transient loads generated by GPU training and inference workloads.
The Dalian-based manufacturer says the cells are rated at 40C and 38C continuous discharge respectively, compared with what it describes as typical 15C performance from conventional alternatives. Single-cell power output is quoted at 260 W for the HP V2.0 and 310 W for the PFS2 V2.0, against an industry-standard range the company puts at roughly 120 W to 200 W for comparable cylindrical LFP and NMC cells. Both cells share the 26650 form factor, meaning they are drop-in compatible with existing BBU enclosure designs without a mechanical redesign.
Technical claims
Internal resistance is cited at below 3 milliohms per cell, against a conventional benchmark of approximately 12 milliohms, a figure CBAK says reduces heat generation and energy loss during high-current switching events. The cells are also said to support up to 100C pulse discharge under specified laboratory test conditions, intended to absorb brief but intense transients during UPS-to-BBU handover. The company reports more than 600 cycles under 5C and 10C test regimes, and quotes an operating temperature range of -40°C to 70°C.
CBAK stresses that all performance data comes from internal laboratory testing under specified conditions, and that actual results will vary with system design and operating environment. No independent third-party validation, certification milestone, or named customer deployment is cited in the release.
Market context
Data centre operators and their infrastructure partners are under mounting pressure to raise backup power density as AI compute racks push beyond 50 kW and are heading toward 100 kW per rack in the most demanding configurations. That shift is straining legacy UPS and BBU designs built around lower average loads, and has opened a market for cell-level innovation alongside liquid cooling and power distribution upgrades.
LFP chemistry is attracting renewed attention in the data centre segment, primarily because of its thermal stability and cycle life relative to nickel manganese cobalt (NMC) alternatives, even though NMC historically offered higher energy density. Several established battery manufacturers and a number of well-funded startups are pursuing similar high-rate LFP cell designs for the same BBU and UPS use cases, and hyperscalers are reported to be running competitive qualification programmes for next-generation backup cells.
CBAK sits in a competitive field that includes larger Korean and Japanese cell makers with established data centre supply-chain relationships. The company's positioning as a specialist in high-rate discharge, rather than energy density, is a deliberate differentiation move, but commercialisation will depend on passing customer qualification cycles, which typically involve independent abuse testing and integration validation rather than vendor-supplied internal benchmarks.
What comes next
CBAK says it expects to publish additional product details, application guidance, and availability timelines in a forthcoming official product launch. The company is inviting early technical discussions from BBU solution providers, battery pack integrators, UPS manufacturers, and data centre infrastructure partners.
The preview release does not include pricing, minimum order quantities, or a production readiness date, which limits the near-term commercial signal. Buyers and investors will look for an independent qualification result and at least one named infrastructure partner as confirmation that the cells are moving from laboratory specification to production-ready deployment.